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Finding the Fourth Proportional to 42,655.44, 63,983.16 and 11,493.12

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Solution

The fourth proportional to 42,655.44, 63,983.16 and 11,493.12 is: 17,239.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,655.44 : 63,983.16 = 11,493.12 : x
  2. Step 2: Convert to fraction form
    42,655.44/63,983.16 = 11,493.12/x
  3. Step 3: Cross multiply
    42,655.44x = 63,983.16 × 11,493.12
  4. Step 4: Simplify right side
    42,655.44x = 735,366,135.86
  5. Step 5: Solve for x
    x = 735,366,135.86/42,655.44
  6. Step 6: Final answer
    x = 17,239.68

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.